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Old 21st June 2021, 02:43 PM   #12211
grindstone is offline grindstone  United States
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Quote:
Originally Posted by David McBean View Post
It didn't take me long to find the problem :-).

I suspect that you must have started with an ODOFP record, which automatically calculates the path length by default, and then changed it to an OHOFP record.
Wasn't OHOFP a pharoah or something? Confirming that indeed you have nailed my usage. It's one of the pure joys to be able to just turn almost anything into almost any other kind of model and HR hangs with it better than it should. The power of that, in aiding understanding, can't really be measured, IMO. THANK YOU!!!!
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Old 21st June 2021, 03:07 PM   #12212
mwmkravchenko is offline mwmkravchenko  Canada
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Originally Posted by KaffiMann View Post
Think I have fallen way behind here, so much new stuff happening.

You and me both!

Really I am not so interested in a resonant system for myself. But I see the utility of it for many people.

Time to learn some new tricks I think!
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Old 22nd June 2021, 06:11 AM   #12213
KaffiMann is offline KaffiMann  Norway
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Time to learn some new tricks I think!
Indeed it is Mark.
I am more interested in the offset port myself, so will look into that in the near future.
Will have to reacquaint myself with the software all over again to understand what all the functions can do.
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Old 22nd June 2021, 06:52 AM   #12214
David McBean is offline David McBean  Australia
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Originally Posted by grindstone View Post
Wasn't OHOFP a pharoah or something?
There were four egyptian pharaohs named Amenhotep, which is close enough :-).
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Old 22nd June 2021, 08:26 AM   #12215
David McBean is offline David McBean  Australia
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Mark has found another bug resulting from the recent update (thanks Mark). It will be fixed in the next release.
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Old 22nd June 2021, 09:47 AM   #12216
grindstone is offline grindstone  United States
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Originally Posted by David McBean View Post
There were four egyptian pharaohs named Amenhotep, which is close enough :-).
Ah, "public school".

Is the end corr in these OFP using the R of Apt or Ap? If the hover info code is already in there for free, it would be welcome. Thank you again, David. Further empowered and having big-fun, here!
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Old 22nd June 2021, 01:33 PM   #12217
Mallickarjuna is offline Mallickarjuna  India
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Hi Guys,

I am new to TL but with adequate knowledge on other enclosure designs, maybe I will be asking few basic questions to get started, yes I have read few documentations.

1. What are the things I need to see in your HornResp SW while designing an offset TL design, I do understand other enclosure designs, so I am only asking specific to TL and and the SW.

2. What is Acoustic Power Graph I need to see while designing the TL, I see the combination graph, what actually is OUTPUT-1, OUTPUT-2, COMBINED and how to understand and use them effectively.

3. I see all other graphs like DISPLACEMENT, PHASE, IMPEDANCE, MOUTH VELOCITY etc. DELAY is another graph that is unique to the TL and HornResp, and I want to understand the graph output more and how to use them.

4. What is the density value of polyester fiber fill I need to input, my supplier gave me data 20Kg/m^3 for 50mm thick, 1000 GSM Polysynth Wool.

Thanks in advance, Mallick
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Old 23rd June 2021, 06:02 AM   #12218
David McBean is offline David McBean  Australia
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Originally Posted by grindstone View Post
Is the end corr in these OFP using the R of Apt or Ap?
Hornresp does not add a throat end correction to either a horn segment or to a flared port. If no EC details are shown when the mouse pointer is moved over the relevant input parameters, then this means that no internal end correction has been added.

If an end correction were to be included, it would apply to Apt (the throat end). No end correction is necessary at Ap (the mouth end) because the radiation impedance is used instead. The difficulty would be deciding what length to make the correction, as the formula used for a cylindrical port tube is not really applicable to a flared port tube.

In essence, the internal end correction is effectively confined to cylindrical port tubes where Hornresp thinks that they are being used as part of a traditional bass reflex type system.
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Old 23rd June 2021, 06:45 AM   #12219
David McBean is offline David McBean  Australia
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Originally Posted by Mallickarjuna View Post
2. What is Acoustic Power Graph I need to see while designing the TL, I see the combination graph, what actually is OUTPUT-1, OUTPUT-2, COMBINED and how to understand and use them effectively.
Others to note - the above question has been answered via email.
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Old 23rd June 2021, 07:00 AM   #12220
David McBean is offline David McBean  Australia
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Originally Posted by Mallickarjuna View Post
4. What is the density value of polyester fiber fill I need to input, my supplier gave me data 20Kg/m^3 for 50mm thick, 1000 GSM Polysynth Wool.
The density value of 20 kg/m^3 is essentially meaningless as far as the Hornresp simulation model is concerned. Your supplier needs to provide you with the airflow resistivity value of the material in mks rayls/m or equivalent units.
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